<template>
    <div class="cropper-content">
        <div class="cropper-box">
            <div class="cropper">
                <vue-cropper
                        ref="cropper"
                        :img="option.img"
                        :outputSize="option.outputSize"
                        :outputType="option.outputType"
                        :info="option.info"
                        :canScale="option.canScale"
                        :autoCrop="option.autoCrop"
                        :autoCropWidth="option.autoCropWidth"
                        :autoCropHeight="option.autoCropHeight"
                        :fixed="option.fixed"
                        :fixedNumber="option.fixedNumber"
                        :full="option.full"
                        :fixedBox="option.fixedBox"
                        :canMove="option.canMove"
                        :canMoveBox="option.canMoveBox"
                        :original="option.original"
                        :centerBox="option.centerBox"
                        :height="option.height"
                        :infoTrue="option.infoTrue"
                        :maxImgSize="option.maxImgSize"
                        :enlarge="option.enlarge"
                        :mode="option.mode"
                        @realTime="realTime"
                        @imgLoad="imgLoad">
                </vue-cropper>
            </div>
            <!--底部操作工具按钮-->
            <div class="footer-btn">
                <div class="scope-btn">
                    <label class="btn" for="uploads">选择专家照片</label>
                    <input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg" @change="selectImg($event)">
                    <el-button size="mini" type="danger" plain icon="el-icon-zoom-in" @click="changeScale(1)">放大</el-button>
                    <el-button size="mini" type="danger" plain icon="el-icon-zoom-out" @click="changeScale(-1)">缩小</el-button>
                    <el-button size="mini" type="danger" plain @click="rotateLeft">↺ 左旋转</el-button>
                    <el-button size="mini" type="danger" plain @click="rotateRight">↻ 右旋转</el-button>
                </div>
                <div class="upload-btn">
                    <el-button size="mini" type="success" @click="uploadImg('blob')">上传照片 <i class="el-icon-upload"></i></el-button>
                </div>
            </div>
        </div>
        <!--预览效果图-->
        <div class="show-preview">
            <div :style="previews.div" class="preview">
                <img :src="previews.url" :style="previews.img">
            </div>
        </div>
    </div>
</template>

<script>
    import { VueCropper } from 'vue-cropper'
    export default {
        name: "CropperImage",
        components: {
            VueCropper
        },
        props:['Name'],
        data() {
            return {
                name:this.Name,
                previews: {},
                option:{
                    img: '',             //裁剪图片的地址
                    outputSize: 1,       //裁剪生成图片的质量(可选0.1 - 1)
                    outputType: 'jpeg',  //裁剪生成图片的格式（jpeg || png || webp）
                    info: true,          //图片大小信息
                    canScale: true,      //图片是否允许滚轮缩放
                    autoCrop: true,      //是否默认生成截图框
                    autoCropWidth: 230,  //默认生成截图框宽度
                    autoCropHeight: 150, //默认生成截图框高度
                    fixed: true,         //是否开启截图框宽高固定比例
                    fixedNumber: [1.53, 1], //截图框的宽高比例
                    full: false,         //false按原比例裁切图片，不失真
                    fixedBox: true,      //固定截图框大小，不允许改变
                    canMove: false,      //上传图片是否可以移动
                    canMoveBox: true,    //截图框能否拖动
                    original: false,     //上传图片按照原始比例渲染
                    centerBox: false,    //截图框是否被限制在图片里面
                    height: true,        //是否按照设备的dpr 输出等比例图片
                    infoTrue: false,     //true为展示真实输出图片宽高，false展示看到的截图框宽高
                    maxImgSize: 3000,    //限制图片最大宽度和高度
                    enlarge: 1,          //图片根据截图框输出比例倍数
                    mode: '230px 150px'  //图片默认渲染方式
                }
            };
        },
        methods: {
            //初始化函数
            imgLoad (msg) {
                console.log("工具初始化函数====="+msg)
            },
            //图片缩放
            changeScale (num) {
                num = num || 1
                this.$refs.cropper.changeScale(num)
            },
            //向左旋转
            rotateLeft () {
                this.$refs.cropper.rotateLeft()
            },
            //向右旋转
            rotateRight () {
                this.$refs.cropper.rotateRight()
            },
            //实时预览函数
            realTime (data) {
                this.previews = data
            },
            //选择图片
            selectImg (e) {
                let file = e.target.files[0]
                if (!/\.(jpg|jpeg|png|JPG|PNG)$/.test(e.target.value)) {
                    this.$message({
                        message: '图片类型要求：jpeg、jpg、png',
                        type: "error"
                    });
                    return false
                }
                //转化为blob
                let reader = new FileReader()
                reader.onload = (e) => {
                    let data
                    if (typeof e.target.result === 'object') {
                        data = window.URL.createObjectURL(new Blob([e.target.result]))
                    } else {
                        data = e.target.result
                    }
                    this.option.img = data
                }
                //转化为base64
                reader.readAsDataURL(file)
            },
            //上传图片
            uploadImg (type) {
                let _this = this;
                if (type === 'blob') {
                    //获取截图的blob数据
                    this.$refs.cropper.getCropBlob(async (data) => {
                        let formData = new FormData();
                        formData.append('file',data,"DX.jpg")
                        let imgInfo = {
                            name : _this.Name,
                            url : _this.previews.url
                        };
                        _this.$emit('uploadImgSuccess',imgInfo);
                        console.log(this.previews.url);
                        //调用axios上传
                        //let {data: res} = await _this.$http.post('/api/file/imgUpload', formData)
                        /* if(res.code === 200){
                           _this.$message({
                             message: res.msg,
                             type: "success"
                           });
                           let data = res.data.replace('[','').replace(']','').split(',');
                           let imgInfo = {
                             name : _this.Name,
                             url : data[0]
                           };
                           _this.$emit('uploadImgSuccess',imgInfo);
                         }else {
                           _this.$message({
                             message: '文件服务异常，请联系管理员！',
                             type: "error"
                           });
                         }*/
                    })
                }
            },
        },
    }
</script>

<style scoped lang="less">
    .cropper-content{
        display: flex;
        display: -webkit-flex;
        justify-content: flex-end;
        .cropper-box{
            flex: 1;
            width: 100%;
            .cropper{
                width: auto;
                height: 300px;
            }
        }

        .show-preview{
            flex: 1;
            -webkit-flex: 1;
            display: flex;
            display: -webkit-flex;
            justify-content: center;
            .preview{
                overflow: hidden;
                border:1px solid #67c23a;
                background: #cccccc;
            }
        }
    }
    .footer-btn{
        margin-top: 30px;
        display: flex;
        display: -webkit-flex;
        justify-content: flex-end;
        .scope-btn{
            display: flex;
            display: -webkit-flex;
            justify-content: space-between;
            padding-right: 10px;
        }
        .upload-btn{
            flex: 1;
            -webkit-flex: 1;
            display: flex;
            display: -webkit-flex;
            justify-content: center;
        }
        .btn {
            outline: none;
            display: inline-block;
            line-height: 1;
            white-space: nowrap;
            cursor: pointer;
            -webkit-appearance: none;
            text-align: center;
            -webkit-box-sizing: border-box;
            box-sizing: border-box;
            outline: 0;
            -webkit-transition: .1s;
            transition: .1s;
            font-weight: 500;
            padding: 8px 15px;
            font-size: 12px;
            border-radius: 3px;
            color: #fff;
            background-color: #409EFF;
            border-color: #409EFF;
            margin-right: 10px;
        }
    }
</style>

